Hi Arnd and Darshana,

Sorry for somehow top-posting, but let me provide some context to what
follows. While pushing a set of patches for ISL 12057 RTC chip, I tried
and continue what had been started by Philip Zabel (7a6540ca856a,
"ARM: mvebu: Change vendor prefix for Intersil Corporation to isil")
in one of the patches (see below) by switching the vendor prefix for
Intersil from isl to isil. This specific patch was handled by Andrew via
his -mm tree and now conflicts with what you pushed upstream.

I do not have a strong advice on what is better and will follow what you
decide by providing an updated patch to Andrew but:

 - your changes somehow revert what has been done by philip
 - three .dts files (those updated by Philip for isil) now have a deprecated 
prefix
 - we now have both isil and isl in vendor-prefixes.txt
 - FWIW, isil is the nasdaq symbol

Cheers,

a+

Andrew Morton <[email protected]> writes:

> On Sat, 15 Nov 2014 00:07:05 +0100 Arnaud Ebalard <[email protected]> wrote:
>
>> 
>> When Intersil ISL12057 driver was introduced by commit 70e123373c05
>> ("rtc: Add support for Intersil ISL12057 I2C RTC chip"), the vendor
>> prefix 'isl' was used instead of the expected 'isil' (Intersil
>> NASDAQ symbol). Recently, a patch from Philip Zabel (7a6540ca856a,
>> "ARM: mvebu: Change vendor prefix for Intersil Corporation to isil")
>> fixed that prefix in ReadyNAS devices .dts files (AFAICT, the only
>> users).
>> 
>> That patch completes that work to change the remaining values in:
>> 
>>  - Intersil ISL12057 driver (compatible string) and also associated
>>    Documentation/devicetree/bindings/i2c/trivial-devices.txt file
>>    to reflect the changes introduced by previous commit from Philip
>>  - Documentation/devicetree/bindings/vendor-prefixes.txt files to
>>    avoid future mistakes
>> 
>> ...
>>
>> diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt 
>> b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
>> index fbde415078e6..edac97c0f756 100644
>> --- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
>> +++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
>> @@ -55,7 +55,7 @@ fsl,sgtl5000               SGTL5000: Ultra Low-Power Audio 
>> Codec
>>  gmt,g751            G751: Digital Temperature Sensor and Thermal Watchdog 
>> with Two-Wire Interface
>>  infineon,slb9635tt  Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 
>> 100khz)
>>  infineon,slb9645tt  Infineon SLB9645 I2C TPM (new protocol, max 400khz)
>> -isl,isl12057                Intersil ISL12057 I2C RTC Chip
>> +isil,isl12057               Intersil ISL12057 I2C RTC Chip
>>  maxim,ds1050                5 Bit Programmable, Pulse-Width Modulator
>>  maxim,max1237               Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit 
>> ADCs
>>  maxim,max6625               9-Bit/12-Bit Temperature Sensors with 
>> I__C-Compatible Serial Interface
>> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt 
>> b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> index 723999d73744..84193ecdc41c 100644
>> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
>> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> @@ -77,7 +77,7 @@ innolux    Innolux Corporation
>>  intel       Intel Corporation
>>  intercontrol        Inter Control Group
>>  isee        ISEE 2007 S.L.
>> -isl Intersil
>> +isil        Intersil
>>  karo        Ka-Ro electronics GmbH
>>  keymile     Keymile GmbH
>>  lacie       LaCie
>> diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c
>> index fe562820a54a..31eaa6a9c2b2 100644
>> --- a/drivers/rtc/rtc-isl12057.c
>> +++ b/drivers/rtc/rtc-isl12057.c
>> @@ -310,7 +310,8 @@ static int isl12057_probe(struct i2c_client *client,
>>  
>>  #ifdef CONFIG_OF
>>  static const struct of_device_id isl12057_dt_match[] = {
>> -    { .compatible = "isl,isl12057" },
>> +    { .compatible = "isl,isl12057" },  /* obsolete */
>> +    { .compatible = "isil,isl12057" },
>>      { },
>>  };
>>  #endif
>
> Your patch conflicts both textually and materially with the two below
> patches, which are now upstream.
>
> I don't know what to do about this so I'll drop "rtc: rtc-isl12057: fix
> isil vs isl naming for intersil".  Could you folks please sort this all
> out?
>
>
>
> commit 7c75c1d5e72be6736aa558efd33ca2b31d77e425
> Author:     Darshana Padmadas <[email protected]>
> AuthorDate: Sat Nov 8 22:52:06 2014 +0530
> Commit:     Arnd Bergmann <[email protected]>
> CommitDate: Thu Nov 20 12:20:18 2014 +0100
>
>     dt-bindings: Document deprecated device vendor name to fix related warning
>     
>     This patch documents deprecated vendor name "isil" to fix warning of
>     undocumented string for device isl29028 as reported while running 
> checkpatch.pl
>     on drivers/staging/iio/light/isl29028.c. This is done to maintain 
> compatibility
>     with older kernels.
>     
>     Signed-off-by: Darshana Padmadas <[email protected]>
>     Acked-by: Arnd Bergmann <[email protected]>
>     Acked-by: Mark Rutland <[email protected]>
>     Signed-off-by: Arnd Bergmann <[email protected]>
>
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt 
> b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index 723999d..bfbd93e 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -77,6 +77,7 @@ innolux     Innolux Corporation
>  intel        Intel Corporation
>  intercontrol Inter Control Group
>  isee ISEE 2007 S.L.
> +isil    Intersil (deprecated, use isl)
>  isl  Intersil
>  karo Ka-Ro electronics GmbH
>  keymile      Keymile GmbH
>
>
> commit b2ea3f82e7984d855c5e61fef18746771d90c73c
> Author:     Darshana Padmadas <[email protected]>
> AuthorDate: Sat Nov 8 22:52:05 2014 +0530
> Commit:     Arnd Bergmann <[email protected]>
> CommitDate: Thu Nov 20 12:19:59 2014 +0100
>
>     dt-bindings: Document correct and deprecated vendor-prefix with device 
> isl29028
>     
>     This patch documents the device isl29028 with its vendor-prefix. 
> Undocumented deprecated vendor-prefix
>     found by checkpatch also documented for compatibility reasons.
>     
>     Signed-off-by: Darshana Padmadas <[email protected]>
>     Acked-by: Arnd Bergmann <[email protected]>
>     Acked-by: Mark Rutland <[email protected]>
>     Signed-off-by: Arnd Bergmann <[email protected]>
>
> diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt 
> b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
> index fbde415..605dcca 100644
> --- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
> +++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
> @@ -56,6 +56,8 @@ gmt,g751            G751: Digital Temperature Sensor and 
> Thermal Watchdog with Two-Wire In
>  infineon,slb9635tt   Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 
> 100khz)
>  infineon,slb9645tt   Infineon SLB9645 I2C TPM (new protocol, max 400khz)
>  isl,isl12057         Intersil ISL12057 I2C RTC Chip
> +isil,isl29028           (deprecated, use isl)
> +isl,isl29028            Intersil ISL29028 Ambient Light and Proximity Sensor
>  maxim,ds1050         5 Bit Programmable, Pulse-Width Modulator
>  maxim,max1237                Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit 
> ADCs
>  maxim,max6625                9-Bit/12-Bit Temperature Sensors with 
> I²C-Compatible Serial Interface
--
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